Summary: Journal of Biological Systems, Vol.4, No#, pages ***--***. c
fl
MANIPULATING FACE GENDER: EFFECTS ON
CATEGORIZATION AND RECOGNITION JUDGMENTS
Kenneth A. Deffenbacher \Lambda , Cheryl Hendrickson \Lambda , Alice J. O'Toole y ,
David P. Huff y , and Herv' e Abdi y
\Lambda Department of Psychology, University of Nebraska at Omaha, Omaha, NE 68182­0274, USA
and
y School of Human Development, GR4.1, The University of Texas at Dallas, Richardson, TX
70083­0688, USA
abstract
Previous research has shown that faces coded as pixel­based images may
be constructed from an appropriately weighted combination of statistical
``features'' (eigenvectors) which are useful for discriminating members of
a learned set of images. We have shown previously that two of the most
heavily weighted features are important in predicting face gender. Using
a simple computational model, we adjusted weightings of these features
in more masculine and more feminine directions for both male and fe­
male adult Caucasian faces. In Experiment 1, cross­gender face image
alterations (e.g., feminizing male faces) reduced both gender classifica­